Dr. Eng. Piotr Grzejszczak is an Associate Professor at the Faculty of Electrical Engineering, Warsaw University of Technology. He graduated with distinction in 2009 and received his Ph.D. in Electrical Engineering in 2014. Since 2015, he has been a faculty member at the Institute of Control and Industrial Electronics (WUT). His research focuses on power electronics, particularly high-frequency DC/DC converters, modular power conversion systems, SiC and GaN semiconductor technologies, battery energy storage systems, and DC microgrids. He has participated in and led several strategic research, development and implementation projects conducted in partnership with industry, including REACTION (Horizon 2020), EHES, SIMES, and EnerGaN. He is a co-inventor of the granted patent PL 243683 Hybrid Power Supply System and a co-author of a patent application concerning energy management in modular DC microgrids. Dr. Grzejszczak has authored and co-authored dozens of scientific papers published in peer-reviewed journals and conference proceedings. He is a member of IEEE and the Polish Society for Theoretical and Applied Electrical Engineering (PTETiS), where he serves as Treasurer of the Main Board and Secretary of the Warsaw Branch. Since 2020, he has been Chair of the Progress in Applied Electrical Engineering (PAEE) conference, and since 2022, he has served as Subject Editor of the scientific and technical journal Electronics – Designs, Technologies, Applications.